Abstract:
AIM:To analyze the effects of NF- kappa B inhibition by antioxidant pyrrolidine dithiocarbamate (PDTC) or TNF inhibitor pentoxifylline (PTX) on liver regeneration after partial hepatectomy (PH). METHODS:Saline, PDTC or PTX were injected 1 h before PH and rats were killed at 0.5 and 24 h after PH. Several control groups were used for comparison (injection control groups). RESULTS:Compared to saline injected controls, NF- kappa B activation was absent 0.5 h after PH in rats treated with PDTC or PTX. At 24 h after PH, DNA synthesis and PCNA expression were identical in treated and control rats and thus occurred irrespectively of the status of NF- kappa B activation at 0.5 h. Signal transducer and activator of transcription 3 (Stat3) activation was observed already 0.5 h after PH in saline, PDTC or PTX group and was similar to Stat3 activation in response to injection without PH. CONCLUSION:These data strongly suggest that (1) NF- kappa B p65/p50 DNA binding produced in response to PH is not a signal necessary to initiate the liver regeneration, (2) Stat3 activation is a stress response unrelated to the activation of NF- kappa B. In conclusion, NF- kappa B activation is not critically required for the process of liver regeneration after PH.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Laurent S,Horsmans Y,Stärkel P,Leclercq I,Sempoux C,Lambotte Ldoi
10.3748/wjg.v11.i46.7345keywords:
subject
Has Abstractpub_date
2005-12-14 00:00:00pages
7345-50issue
46eissn
1007-9327issn
2219-2840journal_volume
11pub_type
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